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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '36a4ca0d7f34068e0f2dc89f61ac4ff2ac98f6db368695fafc4b8b15cbd73f0f' 
  AND token = 'tDmHMBXU27lvd/3DpmMHDsvewbxO2+unRqGp038nH9o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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