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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5f0b1c6d591ee4d1dbbcebfecf80daddfe4c45f6d1135cf34f50fd8d059110fc' 
  AND token = 'osJW98wb7VA0vS/GgyzaEobcvObHcVCgdJ/pg9cYrO8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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