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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0580d0dd8eb549837c8571c837954d199fa1501cb3b85eadce6bc35e4b8e8f7e' 
  AND token = 'wT3aXHPoyfbmtzrRyNbLZLfPCTot4Tf78XRfZvH6FPY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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