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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fdea0c8c7edef9f96f6d63b3b7425a1862e95cc68d55919d4c7cba15e635093e' 
  AND token = 'nyGooAvs0+wlWaCwX8Go8WSXIt6peZ3lPV2eKWYcKog=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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