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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd4552fd5ce1b230ea894838e84cf571222ade1f2920cbaf52bd81e712a9eb505' 
  AND token = 'mLjyS7rfs3Ga4ECz8C7xvbMygNQsEFEgZJb3UpBh8/c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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