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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '658a0e9790614a5703d2ef9a832bc476dbf9d59afe96b1181f129e01632c7fd0' 
  AND token = 'J6UJpTpRT3AvJ2Qd1zFpe2w/WIfU99S2mEe3ho2gHvs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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