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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1cda8ea9a5ed0183b2e6331a908503df980630d51feef00624e8c462e3dd96d6' 
  AND token = 'v22JaOhvVMwFKgkfnv3y9YaAlxk5MooHo05aiG30rw4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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