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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'd2d16bc890edadcd69a2e1f40cc6f4b752cdef897dfe85b85ec01aa7e142bf1b' 
  AND token = 'CYDwLxyqoguIe5gbZa2xCLETC1gc8kLB+j3h8q23h7Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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