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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '130f80d40cd8582308ece210ff406eec25d32a266c6e89ec2d919d2404616745' 
  AND token = 'gh8W2V+x/5Z3lhJXK0xaNtK4KDYGDNRLip6va/sVZEw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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