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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '26072e7519634ec54ede14ca5a341a5b66f2c179e64f22a18bd01ccdea36ec4e' 
  AND token = 'OshGKd1vfqQWoYm4wAKJ9d7c9cNaLm3bHHa5IX7x1gs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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