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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f1511344432260a9ffb1f9142061140af5662f708a6e79abe16e398ab222b514' 
  AND token = 'Kocuw/f0bvvAG82LdqNV7cPe5U9oIgZzxwkWI2tdoYw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00318

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}