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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '10895c32595323e17ff071b8c199e4111806bb442d3d2af47033ba0ccd0b8138' 
  AND token = 'WeaU8LLGYCdGK27MKulxaKF5RocTe/oYfYfmEdhAQ/0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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