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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f3f7362f82dc8ff9a09ddfc122ee4e57a899b6fcc11e6a51b92ceb5b2dc81d5e' 
  AND token = '6djgcCgVLgKFlu4y9nSU/6HUDRNAbIslL9zIepgpWFc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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