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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '127f60e6f1bf2b044c68d4225ead6fd2a6db2161e17b8f5a001ba1f6dd802d61' 
  AND token = 'ak9ULutB1Qq7g297d1f/vB+uG0wv4tx+nCMnqg9bdoY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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